Optical modulator having a reflection plate mounted on a reflection end with an inclined angle against the reflection end
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United States of America Patent
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Mar 14, 2000
Grant Date -
N/A
app pub date -
Mar 19, 1998
filing date -
Mar 19, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An optical modulator (39) includes a substrate (7) exhibiting an electro-optical Pockels effect and having first and second end surfaces (31, 33) opposite to each other. An optical waveguide (9) of a branched interferometer type is formed on the substrate (7) and has first and second branched waveguide portions (11, 13) with an input end and a reflection side end respectively exposed in the first and second end surfaces (31, 33) of the substrate (7). A modulating electrode (15) is formed on the substrate (7) in a vicinity of the branched interferometer type optical waveguide (9). A reflection plate (35) is mounted on the second end surface (33) of the substrate (7) at an angle of inclination (.theta.) with respect thereto. Still further, a spacer (41) is disposed between a side of the reflection plate (35) and the second end surface (33) of the substrate (7) to thereby define the angle of inclination (.theta.) of the reflection plate (35) with respect to the second end surface (33) of the substrate (7).
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